Mold for making rubber boots and shoes



(No Model.)

P. WRE NQ MOLD FOR MAKING RUBBER BOOTS AND SHOES. No. 311,458. Patented Jan. 27, 1885.

ATTORNEYS N. PKIERS: Plvolu-Lflhogmphcn Washinglon. n.c

name rates armor tribe.

PATRICK WREN, OF FRANKLIN, MASSACHUSETTS.

QBPECIFICATION forming part of Letters Patent No. 311,458, dated January 27, 1885.

Application filed November 20, 1854. (N0 model.)

To all whom it may concern:

mold-sections are put together. From this Be it known that I, PATRICK WREN, acitiextension projects the dovetail holding-lug zen of the United States,'residin g at Franklin,

in the county of Norfolk and State of Massachusetts, have invented certain new and useful Improvementsin Molds for Making Rubber Boots and Shoes; andl do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

Figure l of the drawings is a representation of this invention, is a side view, and shows one section of the mold with the interior last. Figs. 2 and 3 are side views of the two portions of the mold with their matrix-recesses. Fig. 4c is aperspective View of the interior last. Fig. 5 is a perspective view of the mold.

This invention has relation to molds forthe manufacture of boots and shoes; and it'consists in the construction and novel arrangement of devices, as hereinafter set forth, and pointed out in the appended claims.

In the accompanying drawings, the letters A A designate the mold-sections, one of which is usually provided with a stud, B, and the other with a socket, G, to receive said stud and fix the relative positions of the mold-see tions when applied to each other. Otherwise they are symmetrical. Each moldsection hasa matrix-recess, D, designed to shape one-half of the exterior, and this recess has an offset portion, E, projecting from that part of the matrix which forms the edge of the opening of the bootsection, said ofi'set having a gentle swell and communicating with the exterior wall of the mold by the channel F, which is made with rectangular corners, but is somewhat flaring or dovetail in its form from the offset outward.

H is a bolt-hole made through the offset portion of the recess.

K indicates the interior last-mold or former, which is designed to form the inside'of the boot or shoe. It is smoothly finished, and

its leg portion is formed with an extension, L, adapted to fit the chambers formed by the offsets E .in a close and neat manner when the N, which is adapted to fit closely in the dovetail seat formed by the chambers F when placed together. When the formeris in position and the mold-sections closed, a circumscribinginterspace, m, extends entirely around said former, except at the extension L, which is in close contact with the offset-chamber E. This interspace is greater at the heel and sole than in the other parts, because a greater thickness of material is desirable in those portions. The rubber, in sheet form, is placed on each side oft-he former or last,or is wrapped around the latter, and the mold-sections are applied thereto and closed upon each other. A bolt or lug may be used to secure the moldsections together in a rigid manner. This supports the dovetail lug firmly in its seat, and the former is held in proper position in the mold.

The mold and its contents are put in the oven and heat applied, causing the rubber to soften and take the form interiorly of the last and exterior-1y of the moldsections. If the parts of the mold are properly fitted, when the boot comes out the seam will hardly be seen.

Having described this invention, what I claim, and desire to secure by Letters Patent, 1s

1. The symmetrical moldsections for rub ber boots and shoes, having the matrix D, 011- sets E, and channels F extending outward from said oiisets, substantially as specified.

2. The combination, with the rubber boot or shoe mold-sections having the matrices, offsets, and seat channelaof the former or lastmoldhaving thelegextension L, and the holding-lug N, substantially as specified.

3. The combination, with the mold-sections having the matrices D, offsets E, and flaring channels F, of the former or last-mold having the leg-extension L, adapted to fit the offsetohamber, and the dovetail holding-lug N, substantially as specified.

In testimony whereof I affix my signature in presence of two witnesses.

PATRICK WREN.

Witnesses:

GEORGE W. Tl-ronr, JAMES W. DONNELLY. 

